Q.4. I are the basic unit of structure and function of all living
things.
a) Cells
c) Organs
b) Tissues
d) Organ systems
Q.5. The specific area where an organism lives is called its
a) niche
b) biomes
c) habitat
d) biosphere
Q.6. What is the highest level of organization of ecological systems?
a) Population
b) Biome
c) Community
d) Biosphere
Q.7.
a) niche
c) habitat
refers to the role of an organism in an ecosystem.
b) biomes
d) biosphere
Q.8.
is a large group of ecosystems characterized by similar